Editing Building Standards (section)

=== Sample Building Materials ===
You're not limited to this list, but it'll hopefully be helpful guidance:

'''Limestone bricks''' - Most of D1 and D4's buildings are probably made with these. D1 because it was easy with all the dug-up limestone - D4 because it was classy.

'''Obsidian''' - There's tons of obsidian around, so it can be used as a decorative element in all kinds of ways. Smoky obsidian glass might be used for lower-quality windows, for example, whereas normal clear glass would be used for better ones. But decorative objects or inlays of obsidian would be distinctly higher-class.

'''Concrete''' - Likely a lot of cheaper buildings, especially in D2 and some parts of D3, use concrete instead of limestone.

'''Slate tiles''' - The default pedestrian outdoor flooring when nothing too fancy is called for.

'''MolecuFlex''' - A self-healing dark flexible material used for making highways.

'''Chromex''' - An alloy of primarily steel combined with multiple other metals, tempered to be lightweight, flexible, and strong. The Hab/Expeditor was largely made of this, it seems like, so panels from that might have been repurposed for makeshift structures (especially in D2). Prettier versions of this might be used alongside high-quality glass for cutting-edge, corporate buildings.